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	<h1 id="firstHeading" class="firstHeading" lang="en">Crop factor</h1>
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		<div id="siteSub" class="noprint">From PanoTools.org Wiki</div>
		
		
		
		
		
		
		<div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="mw-parser-output"><p>The <b>crop factor</b> or <b>focal length multiplier</b> is
the ratio between the size of the <a href="CCD.html" title="CCD">CCD</a> sensor in your camera and the size of a typical 35mm film frame.
</p><p>Usually CCDs are smaller, so the <b>crop factor</b> for a pocket camera can
be around 6 and the crop factor for a DSLR is usually around 1.5.
Some DSLRs have a 35mm size sensor so the factor for these is 1.
</p><p>Alternatively it is easy to calculate as the ratio between the actual
<a href="Focal_Length.html" title="Focal Length">Focal Length</a> and the 35mm equivalent focal length of the camera. Those two
values can be found on the specification page of any digital camera
where the CCD/CMOS size is harder to find
</p><p>External link: <a rel="nofollow" class="external text" href="http://www.millhouse.nl/digitalcropfactorframe.html">The digital crop factor explained</a>
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